Valve.



I PATENTED MAY 29, 1906.- ;r. KENNEDY.

VALVE.

APPLICATION FILED JULY 21, 1905.

INVENTOR WITNES SES I PATENTED MAY 29, 1906 J.KBNNEDY.

No. 821,943'. I

VALVE.

A PP LIGATION FILED JULYZI, 1905 2 SHBBTSQSHEET 2 INVENTOR WITNESSESalduwm To all whom it may concern.-

JULIAN KENNEDY, OFPTTTSBURG, PENNSYLYANIA ,6

. VALVE.

no. senses.

Be it-known that I, JULIAN K NNEDY, of 'Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Valve, of

j description, reference being had to the 210- part of the valve.

August which the followingis a full, clear, and exact companyingdrawings, forming part of this specification, in which Figure 1 isavertical section showing a flue of a hot-blast stove provided with myimproved valve. Fig. 2 is an elevation of a Fig. 3 is a view similar toig- 1, showing a modified construction. Fig. 4 is an elevation of partof the valve showninFig. 3.

My invention is an improvement upon the furnace-valve shown anddescribed in Let ters Patent No. 767,285, granted to me on 9, 1904;, Asstated in the said patent, when spectacle-valves and like edgewisemoving valves have been used on thechim ney-fiues of hot-blast stoves orfurnaces it has of the valve to its seat by boltsn .Such constructionsare unsatisfactory, because it has been found impossible to prevent thevalve U when so held from warping out of contact from the seat andleaking. The conditions of use prevent thesuccessful packing of thevalve, and the difficulty above mentioned is therefore serious.

My invention is designed to provide a valve which is readily movable.and which when seated can be held to its seat with great security. I

In the drawings, B B represent the flue leadin' from a hot-blast stoveor furnace, throng which. the gases pass in the direction of the arrow.

2 2 represent the spectacle-valve, the portion 2 being a disk adapted.to close the port when it is seated and the portion 2 being annular andadaptedto leave the port unobstructed. when it is brought opposite tothe seat. These portions are connected by a bridge-piece 3, pivotallymounted on, a bolt at the side of the annular. valve-seat 5',-

which, in conjunction with the parallel flange 6 on the hue-casing?affords atransverse slot or opening for the edgewise movement of thevalve, which can be rotatedon the pivot 4i, bringing the disk portion 2or the annular portion? opposite to the seat. The fluecasing isheld tothe valve-seatby bolts 8.

9 is a clamping-stem which 18 inde endent of the valve and extendsthrough a t readed Specification of Letters Patent.

Applioatioufiled July 21.1905. Serial no. 270,632. ,1;

been the practice'to clamp the periphery socket 10 in the through asleeve 11,.which entends inwardly.

therefrom and shields .fronrthe, hot gases when the valve The end ,of

the stem is directed towardtheiniddle.ofthe valveport, so that wheirthevalveZis brought to its seat the stem maybe screwed inwardly,

so as to bear at the end againstthe niddlepf the valve and to clampit, UInstead of making.Ithe disk f the valve portion 2 inte ral'withl'itsrimln akegit of a separate circu ar piecdoiijdish which set within anannular rini lfi or 'f rame ponstitutin-g part ofthe valveg ilt'is'heldyieldingly, preferably by means of lamspringdisk 13, which isfixed at the nii d dlejfto the diskiZby rivets .14 or otherwise and atfits'. free-,edge bears against a shoulder. on the run 12. .The

disk 2' bears againstfthe. other side of the rim anjdjis thusheldyieldingly iirplace' on the valve margin, so that when the ste1nl9 isscrewed inwardly it will force it against the seat independently of thevalve-frame, thusgiving much greater flexibility to the valve than itotherwise would have and causing it to fit more tightly against itsseat. As shown in Fig. 1, the valve-disk 2 is in position to be seated,but has not yet been forced to its seat by screwing in of the stem 9.The construct-ion is preferably such that the valve-disk 2 is rotarywithin its inclosing rim or frame, and by shifting it rotatively fromtime to time accuracy of its bearing on the seat is enhanced.

Inthe construction shown in Figs. 3 and 4 instead of using a spring-disk13 for holding the yielding portion of the valve to its frame or rim Iemploy links 15, which are connected to eyes or projections 16 ontheframe at one end and at the other end have eyes 17, which are placedupon hooks 18 on the valvedisk proper. This gives a yielding connec-'tion between the-valvc-disk and the frame or rim of the valve, althoughnot a spring connection, but accomplishes the same purpose as abovestated of rendering the seatportion. of the valve flexibly independent.

In Fig. 3 I also show the valve provided with a packing-ring 18, whichmay be made of asbestos or other suitable refractory ma-i Within thescope of my invention as defined in the claims the manner of'connectingwi'sein'to the flue, and a disk portion having v1C 'the valve-disk tothe rim or frame maybe modified in many Ways by those skilled in theart, since What I claim'is--.

1. A flue ha v ing a valve consisting of a frame or'rim portion mountedto move edgependent rotary movement of-thedisk portion,

and means for moving the disk portion to close the valve substantiallyas described.

3. A flue provided with a valve consisting of a circular frame or rimportion mounted to move edgewise into the fine, and arcircular diskportion incl'osed by the frame portion and having a marginal seatthereon, flexible connections between the two portions, and a .stem forforcing the disk portion away from the rim portion to close the valve;substam tially as described.

4. A valve having an inclosing frame, a valveportion'set on one side ofthe frame and havin aspring-plate bearing on the other side 0 the frame,and means for forc ng the valve to its seat substantially as described.

5. A valve comprising a frame adapted to move ed 'eWise into closingposition, a valve portion flexibly connected to the frame, and a movableclamp bearing on the valve portion and adapted to force it to its seattogether with a casing supporting said clamp;

substantially as describe 6. A spectacle-valve comprising a frame havingan annular open portion, a second frame having a valve portion flexiblyconnected thereto, and a movable clamp extend- .ing into the flue andadapted tobear upon the middle portion of the flexibly-connected membertogether with a casing supporting the clamp substantially as described.

In testimony whereof I have hereunto set my hand.

JULIAN KENNEDY. l/Vitnesses:

H. W. Ram,

A. SHORT.

